This orzo with kale sauce is a delicious vegetarian pasta. Kale is usually used for in stew, but did you know you can do much more with it? I myself am a big fan of kale. This versatile vegetable is one of the healthiest around! There are an awful lot of vitamins in kale. According to this source in about 250 grams of kale, there are as much as 2600% of the RDA for vitamin K, 700% of the RDA for vitamin A, 180% of the RDA for vitamin C, 52% of the RDA for manganese, 20% of the RDA for copper and 20% of the RDA for calcium. That's huge!